160224

Appears in sequences

• Number of labeled rooted connected graphs.at n=6A053549
• E.g.f. satisfies: L(x) = x*Sum_{n>=0} (1/n!)*Product_{k=0..n-1} L(2^k*x).at n=5A177777
• Triangular array read by rows: T(n,k) is the number of rooted labeled simple graphs on {1,2,...,n} such that the root is in a component of size k; n>=1, 1<=k<=n.at n=20A228315
• Starts of runs of 3 consecutive lazy-tribonacci-Niven numbers (A352107).at n=12A352109
• Triangle read by rows. T(n, k) = A360604(n, k) * A001187(k) for 0 <= k <= n.at n=34A360603